Overview
The ADP7118ARDZ-3.3 is a CMOS, low dropout (LDO) linear regulator produced by Analog Devices Inc. This regulator operates from an input voltage range of 2.7 V to 20 V and provides up to 200 mA of output current. It is designed to regulate high-performance analog and mixed-signal circuits, offering high power supply rejection, low noise, and excellent line and load transient response. The device is particularly suitable for applications requiring stable and noise-free power supply, such as in communications, medical devices, industrial instrumentation, and more.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 20 V |
| Maximum Output Current | 200 mA |
| Output Voltage | 3.3 V (fixed) |
| Output Noise (10 Hz to 100 kHz) | 11 µV rms |
| Power Supply Rejection Ratio (PSRR) | 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz |
| Initial Accuracy | ±0.8% |
| Dropout Voltage | Defined as input-to-output voltage differential when input voltage is set to the nominal output voltage |
| Package Type | SOIC-8-EP |
Key Features
- Low noise: 11 µV rms independent of fixed output voltage
- High power supply rejection ratio (PSRR): 88 dB at 10 kHz, 68 dB at 100 kHz, 50 dB at 1 MHz
- Excellent line and load transient response with a small 2.2 µF ceramic output capacitor
- Available in 16 fixed output voltage options, with the ability to set higher voltages using an external voltage divider
- Low dropout voltage
- High accuracy over line, load, and temperature
Applications
- Communications and infrastructure
- Medical and healthcare devices
- Industrial and instrumentation systems
- Analog and mixed-signal circuits requiring high performance and low noise
Q & A
- What is the input voltage range of the ADP7118ARDZ-3.3? The input voltage range is from 2.7 V to 20 V.
- What is the maximum output current of the ADP7118ARDZ-3.3? The maximum output current is 200 mA.
- What is the output voltage of the ADP7118ARDZ-3.3? The output voltage is fixed at 3.3 V.
- What is the output noise of the ADP7118ARDZ-3.3? The output noise is 11 µV rms from 10 Hz to 100 kHz.
- What is the power supply rejection ratio (PSRR) of the ADP7118ARDZ-3.3? The PSRR is 88 dB at 10 kHz, 68 dB at 100 kHz, and 50 dB at 1 MHz.
- What is the initial accuracy of the ADP7118ARDZ-3.3? The initial accuracy is ±0.8%.
- In what package type is the ADP7118ARDZ-3.3 available? The ADP7118ARDZ-3.3 is available in an SOIC-8-EP package.
- What are some typical applications of the ADP7118ARDZ-3.3? Typical applications include communications, medical devices, industrial instrumentation, and high-performance analog and mixed-signal circuits.
- Can the output voltage of the ADP7118ARDZ-3.3 be adjusted? While the ADP7118ARDZ-3.3 has a fixed output voltage, other versions of the ADP7118 can be adjusted using an external voltage divider.
- What tool supports the ADP7118? The ADP7118 is supported by the ADIsimPower tool.
